Added get_all_systemd_units to the shared systemd tests mini API
Added get_all_systemd_units to the shared systemd tests mini API

This functionality is required for pattern matching across systemd
units.

postfix/openscap,isimluk/openscap,isimluk/openscap,mpreisler/openscap,openprivacy/openscap,Hexadorsimal/openscap,ybznek/openscap,Hexadorsimal/openscap,ybznek/openscap,OpenSCAP/openscap,redhatrises/openscap,Hexadorsimal/openscap,postfix/openscap,mpreisler/openscap,redhatrises/openscap,jan-cerny/openscap,openprivacy/openscap,isimluk/openscap,postfix/openscap,ybznek/openscap,redhatrises/openscap,openprivacy/openscap,ybznek/openscap,openprivacy/openscap,mpreisler/openscap,OpenSCAP/openscap,jan-cerny/openscap,isimluk/openscap,Hexadorsimal/openscap,openprivacy/openscap,redhatrises/openscap,mpreisler/openscap,OpenSCAP/openscap,postfix/openscap,postfix/openscap,openprivacy/openscap,ybznek/openscap,jan-cerny/openscap,isimluk/openscap,Hexadorsimal/openscap,jan-cerny/openscap,jan-cerny/openscap,redhatrises/openscap,mpreisler/openscap,Hexadorsimal/openscap,mpreisler/openscap,redhatrises/openscap,OpenSCAP/openscap,jan-cerny/openscap,ybznek/openscap,isimluk/openscap,postfix/openscap,OpenSCAP/openscap,OpenSCAP/openscap